Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 54 · 40 questions

What you do (Choose the right way): 1. Put cotton or cloth in the funnel, then layers of sand and small pebbles. 2. Stand the funnel in a clean glass. 3. Pour muddy water in slowly and watch what drips out. 4. Compare the colour before and after — never drink it — and wash your hands.

1. 1.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) yeast (d) cotton or cloth
2. 2.True or false: mud from water is done by evaporating. (a) True (b) False
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) cotton or cloth (c) sand and pebbles (d) a clean glass
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the amount poured
5. 5.🫗 Which of these is done by filtering? (a) bad grains from rice (b) gravel from fine sand (c) chaff from wheat grain (d) mud from water
6. 6.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
9. 9.True or false: bran from wheat flour is done by sieving. (a) False (b) True
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a funnel (d) a magnet
11. 11.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
12. 12.True or false: bad grains from rice is done by winnowing. (a) False (b) True
13. 13.🫗 How do we separate husk from rice grain? (a) filtering (b) handpicking (c) sieving (d) winnowing
14. 14.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the filter material (c) the same muddy water
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) bad grains from rice (c) chaff from wheat grain (d) sugar from sugar water
18. 18.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
20. 20.🫗 Which of these is done by evaporating? (a) salt from sea water (b) bad grains from rice (c) gravel from fine sand (d) husk from rice grain
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a battery cell (d) cotton or cloth
23. 23.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
24. 24.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it sinks to the bottom (d) it dissolves
25. 25.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
26. 26.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) it turns to sugar (d) no, salt passes through
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) how clear the water is (c) the amount poured (d) the same funnel
28. 28.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
29. 29.True or false: gravel from fine sand is done by winnowing. (a) True (b) False
30. 30.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) filtering (c) winnowing (d) evaporating
31. 31.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
32. 32.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves pass through (d) leaves stay behind
33. 33.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a clean glass (d) a balloon
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the same funnel
35. 35.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) bad grains from rice (c) chaff from wheat grain (d) gravel from fine sand
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same muddy water (b) the same funnel (c) how clear the water is (d) the filter material
37. 37.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
38. 38.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a battery cell (c) a magnet (d) yeast
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) False (b) True

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